Improved apparatus foe treating clay



@with @ftatr atrnt @fitta ISAAC GREGG, 0F PHILADELPHIA, PENNSYLVANIA. Letters .Pate-nt 1Y0. 66,488, elated July 9, 1867,

IMPROVBD APPARATUS FOR TREATING CLAY.4

TO -ALL WHOM IT MAY CONCERN':

Be it known that I, ISAAC GREGG, of Philadelphia, Pennsylvania, have invented an improvement in Appa ratus for Treating Clay; and I do hereby declare the following to be a full, clear, end exact description of the same, reference being had to the accompanying drawing, and to the letters of reference marked thereon. g

My invention consists of two tapering rollers, geared Stogether and arranged to operate on clay and on stones contained therein in the manner described hereafter, so that the said stones may be removed automatically from the said'rollers and prevented from injuring the same. i

In order to enablel others to make and use my invention, I will now proceed `to describe its construction andoperation.`

On reference to the accompanying drawing, which forms a part of this specification- Figure l is a `sectional view of my apparatus for treating clay for brick-maling- VFigure 2, a transverse section of the same on the line 1 2, iig. l; and

Figure 3, a sectional plan on the line 3-4, tig. l.

Similar letters refer to similar parts throughout the several views.

The oppositesidefframes A and A are' connected together by cross-pieces ava ,a4nd at the top by a platform:

b. Turning in suitable bearings on the opposite side-frames is a shaft, B, provided with a tapering roller, C, which is contained within an opening, d, in the platform b. On the shaft B is also a driving-pulley, e, a ily-wheel, f, and a cog-wheel', D, the teeth of' the latter being slightly bevelled. A tapering roller, C', is also contained within 'the openingl d of the platform, and is so situated as to coincide with the roller C, and is secured to an ',inolinedks'baft E, which' turns in the opposite side-frames, and is provided with a. pinion, F, gearinginto the teeth of the wheel D before described. Secured to the sidelframe A ot the apparatus, and beneath the rollers C vand C', is a chute, G, and on uprights g, projecting from the platform b, is a table, II, and a hopper, J, the latter being situated immediately over the rollers C and C. Heretofore straight or cylindrical rollers have been employed for treating clay to be used in the manufacture of bricks, the clay passing between and being triturated or ground by therrollers and falling -into a receptacle beneath. The objection to these rollers is that when the clay, as is very often the case, contains a hard stone too large to pass between the rollers, the surfaces of the latter are scratched, and the machine must be stoppedfor the purpose of removing the stone. This objection is obvia-ted by the employment of tapering rollers; for as the latter revolve at diiferent speeds, and the clay from` the hopper isv subjected to their action, it is thoroughly broken and disintegrated, while stones which are too large `to pass between or to be crushed by the rollers traverse toward those ends of the same which have the greatest diameter, and fall over the edge z, iig. 3, and into the chute G.

I'claimas my invention, and desire to secure by Letters Patent- The two tapering-rollers C and C,`geared together, and arranged to operate on the clay and stones contained-therein, as set forth. j

In testimony whereof I have signed my name to this specilication in the presence of two subscribing witnesses.

`ISAAC GREGG Witnesses CHARLES E. Fosrnn, W. J. R. DELANY.. 

